Replying to i need help!

i tried to blow snow 2 days ago and it was plenty cold out but i had majior problems.

Problem 1: My snow gun kept freezing up and the air hoses kept freezing up but i fixed the air hopse problem.

Problem 2: for some reason air was coming out of the gun but no water, then i almost pooped my self when i found out the air was pussing into the water hose and backing into the pluming system in my house and when i go into my base ment the is a bunch of water on my floor right by the water tank

how do you make snow with out everything freezing up and why did the air go into the water tank?
I cant spell so dont make fun of me